Plans by Toyota Motor Corp. and Honda Motor Co. to run factories overtime to recoup production lost to parts shortages caused by Japan’s earthquake may be delayed until early 2012 because of flooding in Thailand.

Toyota, Asia’s biggest carmaker, is scaling back output in Japan for a third week and suspended overtime in North America for a second week as disruptions from the floods spread. Honda is temporarily eliminating overtime and running North American plants at half capacity until next week as Japan’s third-largest automaker assesses its inventory.